Door lock and the like



July 21, 1925. 1,546,473

- A. CAPPELLARI DOOR LOCK AND 'II'HE LIKE Filed p 24- 1922 2 Sheets-Sheet 1 d. Ca jn LZ/Q/Lb;

July 21, 1925. I 1,546,473

A. CAPPELLARI DOOR LOCK AND THE LIKE I Filed April 24. 1 2 shfltbsheet 2 Imam/501 J1. Car -v ne bLazzi/ Patented July 21, 1925.

UNITED STATES PATENT OFFICE.

ALronso CAPPELLARI, or BOLOGNA, ITALY, assrenoa T0 LUIGI DONZELLI, or

BOLOGNA, ITALY.

noon LOCK AND THE LIKE. 1

Application filed April 24, 1922. Serial No. 556,280.

To all whom it may concern:

Be it known that I, ALroNso CAPPELLARI, subject of the King of Italy, residing at 2 Via Lodovico Berti, Bologna, Italy, have invented certain new and useful Improvements in Door Locks and the like, of which the following is a specification.

This invention relates to improvements in looks and has for its object to provide a device combined with a conventional type of key-controlled lock which will reliably act to prevent the retraction of the bolt by an unauthorized person who may have surreptitiously obtained possession of the original or a duplicate of the original key to the lock.

A further object of the invention is the provision of a lock of this type wherein the parts which normally act to obstruct com plete retraction of the bolt, may, upon improper manipulation by a person authorized to open the lock, be moved to such position as to permit the usual manipulation of the key.

In the accompanying drawings, wherein an improved embodiment of the invention is illustrated Figure 1 is a horizontal sectional view through a door or other closure showing the invention applied thereto, the lock being shown in section.

Fig. 2 is a longitudinal sectional view through the inner hollow shaft of the bolt locking device;

Fig. 3 is a 'detail sectional View of the locking device showing the arrangement and operation of the screw which is utilized to' move the parts of the bolt locking device to inoperative position;

Fig. 4: is a transverse sectional view on the line azm of Fig. 1;

Fig. 5 is a transverse sectional view on the line y y of Fig. 1; and,

Fig. 6 is an end elevation of the dials as sociated with the relatively movable parts of the bolt locking device.

Referring to the drawing in detail, a indicates the lock casing which is adapted to be mounted upon a door I) or equivalent closure associated with a door frame or the like 0.

A bolt 03 is slidably mounted in the look I casing a and is adapted to be projected into a keeper 6 in the door frame 0, the'com 5 pletely projected position of the bolt being the retraction of the bolt by indicated in dotted lines in Figure 1, the full line position of said bolt representing the partially retracted position of the bolt. The bolt is adapted to be retracted by the usual key 7 coacting with tumblers or the like 9 indicated diagrammatically in Figure 1.

The lock casing a is provided with an opening at a point adjacent theinner extremity of the bolt d in which is fitted'a bearing plate 18 having a notch 17'constituting a pivotal mounting for the tapered extremity 16 of a polygonal extension 15 formed integral with the center shaft 1 having an enlarged medial portion 13.

The terminal of the shaft 1 opposite the polygonal extension 15 is provided with a longitudinal groove 36 receiving an internal lug of a ring 10 which latter is thus slidably but'non-rotatably fitted on the shaft 1 and is provided on its outer surface with radial ribs 23 adapted .to coact with corresponding ribs formed onthe closed end or head 11 of a tubular shaft 2 which encloses the shaft 1 and terminates at the enlarged portion 13 thereof. A spring 22 is confined between the ring 10 and the enlargement 13 and normally acts to maintain the ring in engagement with the head 11 whereby rotary movement of the latter is transmitted to, the ring 10 and thence to the shaft 1. v

A cup-like member 6 is rotatably mounted on the enlargement 13 of the shaft 1 and is formed integral with a radially ribbed flange. 8 receiving a tubular shell or partition member 3,'which latter is interposed between the flange 8 and the tubular shaft 2. The flange 8 projects into the inner extremity of a barrel 1, the opposite extremity of which latter is provided with an inturned flange 24: overlying the peripherally recessed headll whereby the latter is maintained in proper position with respect to the door I) and the lock casing a. A retaining ring 12 is bolted or otherwise secured to the door I) and coacts wit h the flange'd extremity 24 of the barrel 4 to. prevent outward displacement of the latter.

A ribbed flan e '8 coa'cts with a corresponding ribbe ring 9 having radial projections 38 received in corresponding internal slots in the barrel fwhereby a non-rotatable connection is established between said barrel and the ring 9. "A spring 38 7 locking member 2O. l1 avingacentral polygonal aperture receiving the polygonal extenis confined between the head 11 of the inner hollow shaft 2 and the ring 9 and normally presses the latter against the flange 8 whereby" a yielding drivingconnectio'n between the ring and flange is established toinsure the transmission of rotary movement of the barrel 4 to the cup-like member 6.

Bolt locking members 20 and 27 are mount-,

ed for axialv movement in the bearing plate 18 and cup-like member 6, respectively, the

. sion of the center shaft 1 whe'reby rotary provided with an inwardly projecting shank, h terminating in a head 31, said head havingmovement of said shaftis transmitted to the docking member 20. The other locking member 27 is slidably fitted on the enlargement 13-of the center shaft and is provided with I radial lugs 26 engaged-in slots 25 of the cup-shaped member 6 whereby a non-rotatable connection is established between said cup-shaped memberand the loekingmember27f. I

, I The locking member 20 is provided with an angular-1y directed flange 21 and a radial vprojection 5 and said locking member is normally retained 1n engagement with the and said locking member 27 is provided with spaced laterally projecting flanges 40 and f 41, the flange 40 lying opposite the flange 21 of the'locking member 20 and the flange '41-being arranged inwardly thereof. Both flanges 40 and 41 are interruptedat one point 'to form a radial slot 29, Fig. 5, the side walls of'which latter are defined by upstanding ribs 39 and39 formed on the member 27.- r

The slidable bolt (23 of the door lock is fa penetrating point at one end and retaining'shoulders 2' at the inner end; The point.

of extremity of the'head 31 isarranged in --alinement, the point of eontact between the flanges 21 and 40 of therespective locking members 20 and 27 and the enlargement 13 vof theinner sha'ftl is provided .with-arradial recess 14 adapted, when \the'two locking members-20 and 27 areproperly positioned,

to receive the head 31 carried by the shank of the bolt lock.

The operation of the lock as follows:

'When it is desired to project the bolt cl and head 11 is turned so as to effect rotation of the enlargement 13 and thereby cause the prevent its retraction by unauthorized persons, the key f is utilized to projectthe bolt to its 'uttermost, position as indicated in dotted lines in Figure 1 and thereafter the recess 14 to be moved out of alinement with t Figure -1.

this extent by an unauthorlzed person,'1ts

the headed extremity 31 of the bolt shank h. The barrel 4 is also turned so as to effect rotation of the locking member 27, the lat ter being moved to such position that the slot 29 therein is also moved out of line with i with the use of a proper .key', partially retract the bolt all as indicated in full lines in hen the bolt has been moved to further retraction is prevented by the abutment of the shank head 31 with the flange 41 of the locking-member27 and after the head 31 has entered between the flanges 21 and 40,'it can not; again be moved outwardly to permit the bolt to be completely projected due to the engagement of the shoulders 11 of said head with the inner faces of the flanges 21 and 44. Thus, when an unauthorized'person attempts to retractvthe bolt d the latter may bemoved to an intermediate position in which it is locked and the key f having been partially turned in the lock in the attempt to retract the bolt, it is now impossible to withdraw the key and the latter remaining in the lock is an indication of an attempt to tamper therewith. I

The ribs 39, 39 on the locking member 27 prevent an unauthorized person turning the locking member 27 after the bolt has been partially retracted, as an attempt to turn the barrel 4 to effect rotation of the locking member 27 will cause either one or the other of the ribs 39 or 39 to be brought into engagement with the head 31 whereupon the rotary movement of the lock ing member 27 is positively prevented. a

For the convenience of authorized persons, the retaining ring 12, flange and the head 11 are preferably provided with suitable markings such as suggested in Fig. 6, which will enable such person toquickjly and easily turn they locking members 20 and 27 to such positions as will permit the head 31 of the shank h to enterthrough Y the slot29 and the recess H 14 whereupon the key may be inserted in the lock and manipulated to fully retract thebolt d.

vThe screw 32 is fitted 111a threaded aperture formed in the locking member '20 and the end which passes through the bearing plate 16 is preferably headed to facilitate adjustment, thereof. The opposite end of the screw 32 bears against the locking member 27 and when it is desired to move the locking members 20 and 27 to inoperative positions the screw 32 is turned so as to advance toward the locking member 27 and. in so doing the locking members are separated as indicated in Fig; 3' and in these positions they do not coact with the head 31 of the bolt shank. hen it is desired to permit the locking members 20 and 21 to be moved to operative position under the influenceof the springs 19 and 30, respectively, the screw 32 is removed from the locking member 20.

I claim:

1. In a look, a key controlled bolt, a headed shank carried by said bolt, relatively movable locking members normally preventing complete retraction of said bolt, but permitting partial retraction thereof, and means on said locking members coacting with the head of the shank to lock the bolt in partially retracted position, means permitting the locking members to be moved to such position as to permit the complete retraction of said bolt.

2. In a look, a key controlled bolt, a headed shank carried by said ,bolt, relatively movable locking members coacting with said headed shank to prevent complete retraction of said bolt, said locking members having portions thereof cut away and adapted, when moved to proper positions, to permit the entry of the head shank whereby the bolt may be completely withdrawn, means on said locking members coacting with the head of the shank whereby to lock the bolt in partially retracted position, and means permitting independent adjustment of the respective locking members.

3. In a look, a key controlled bolt, a headed shank carried by said bolt, relatively movable locking members coacting with said headed shank to prevent complete retraction of said bolt, said locking members having portions thereof cut away and adapted, when moved to proper positions, to permit the entry of the headed shank whereby the bolt may be completely withdrawn, means on said locking members coacting with the head of the shank whereby to lock the bolt in partially retracted position, means permitting independent adjustment of the respective locking members, and means for maintaining the locking members in inoperative position whereby to permit the bolt to be projected and retracted in the usual manner by the key.

4. In a look, a key-controlled bolt, a headed shank carried by said bolt, relatively movable locking members coacting with said headed shank to prevent complete retraction of said bolt, said locking members having portions thereof cut away and adapted, when moved to proper positions, to permit the entry of the headed shank whereby the bolt may be completely withdrawn, means on said locking members ooacting with the head of the shank whereby to lock the bolt in partially retracted position, means permitting independent adjustment of the respective locking members, and means for maintaining the locking members in inoperatlve position whereby to permit the bolt to be projected and retracted in the usual mannerby the key, said locking members being spring-pressed and displaceable incident to the entry of the head of the shank therebetween.

5. In a look, a keycontrolled bolt, a headed shank carried by said bolt, relatively movable locking members coacting with said headed shank to prevent complete retraction of said bolt, said locking members having portions thereof cut away and adapted, when moved to proper positions, to permit the entry of the headed shank whereby the bolt may be completely withdrawn, means on said locking members coacting with the head of the shank whereby to lock the bolt in partially retracted position, means permitting independent adjustment of the respective locking members, means for maintaining the locking members in inoperative position whereby to permit the bolt to be projected and retracted in the usual manner by the key, said locking members being spring-pressed and displaceable incident to the entry of the head of the shank therebetween, and means to maintain the locking members in inoperative position.

6. In a look, a key-controlled bolt, a shank carried head on said bolt, said head having a penetrating point at one end and shoulders at the opposite end, spring-pressed locking members lying in the path of and adapted to be engaged and separated by said head upon partial retraction of said bolt, means on said locking members ooaeting with the shoulders of said head to prevent the bolt from being projected subsequent to the partial retraction thereof, means on certain of said locking members normally obstructing the movement of the head and preventing complete retraction of said bolt, means on the last mentioned locking member adapted, when said member is moved to proper position, to permit the passage of said head therethrough and the complete retraction of said bolt, and means to manipulate said looking members.

7 In a look, a key-controlled bolt, a shank carried head on said bolt, said head having a penetrating point at one end and shoulders at the opposite end, springpressed locking members lying in the path of and adapted to be engaged and separated by said head upon partial retraction of said bolt, means on said locking members coacting with the shoulders of said head to prevent the bolt from being projected subsequent to the partial retraction thereof, means on certain of said locking members normally obstructing the movement of the head and preventing complete retraction of said bolt. means on the last mentioned locking member adapted, when said member is moved to proper position, to permit the passage of said head therethrough and the complete retraction of said bolt, and means to manipulate said locking members, said last mentioned means including a center bolt having an enlargement thereon provided With a recess adapted to be turned into alinement With the shank carried head to reoeive the latter upon complete retraction of said bolt. o

Signed at Milan, Italy, this 8rd day of April 1922.

ALFONSO CAPPELLARI. 

